public class SubjectEdit 
        {
            /// <summary>
            /// ID
            /// </summary>
            public int ProjTmId { get; set; }

            /// <summary>
            /// 名称
            /// </summary>
            public string ProjTmName { get; set; }

        }

List<SubjectEdit> list_Subject = new List<SubjectEdit>();

 foreach (var item in DetailList)
     {
            SubjectEdit listset = null;//初始化类
             listset = new SubjectEdit();//实例化类，给其信息
             listset.Id = item.Id;
             listset.ProjTmName = Subject_KU_at.ProjTmName_at;
             list_Subject.Add(listset);
      }